NIST-traceable pH 4.01 value ensures reliable and accurate calibration
0.01% accuracy at 25°C provides traceable results for laboratory and field use
Color-coded label allows quick identification of buffer value
Airtight bottle with tamper-proof seal maintains solution integrity
Temperature-correlation chart on bottle supports precise calibration
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Product Code: HI7004L
The Hanna HI7004L pH 4.01 Calibration Solution is a high-quality buffer solution formulated for accurate calibration of pH meters and electrodes. With a nominal pH value of 4.01 at 25°C and an accuracy of ±0.01 pH, it provides a dependable calibration standard for laboratory, environmental, water quality and field-t